Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b8f2d7d151d13af…

MALICIOUS

PDF

50.7 KB Created: 2020-08-29 20:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5be674d60f1362971bd7b49cf2f5fa25 SHA-1: dd314d10cd0bc43bdeda8dbfe320846c1640c3df SHA-256: 3b8f2d7d151d13af49ba4747955daa3fee865d2ada3b4d613744c316da5a1ed9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary intent is to lure the user to a malicious site.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=plurales+regulares+e+irregulares+en+ingles
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/google_api_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0436/9183/5545/files/bartok_romanian_folk_dances_piano.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/94951535371.pdf
    • https://cdn.shopify.com/s/files/1/0439/6207/3246/files/7587738037.pdf
    • https://cdn.shopify.com/s/files/1/0438/7618/8315/files/siporaxobanibabulamobaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/blockchain_full_tutorial.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9e377371a5b4457b6a196d957fd3a1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0a240b999dd4962a9aaa97d70bbd310.pdf
    • https://cdn.shopify.com/s/files/1/0435/3232/0917/files/worry-_free_business_security_services.pdf
    • https://cdn.shopify.com/s/files/1/0433/1811/6510/files/saxagerakuxokawek.pdf
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/72705837158.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f6.bin
82d4b50c9c81c7822be176a0e0bebf4280b0e5b49d00254fc2dffeaa135330d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F6 4852 bytes
font_01_sfnt_off0000777d.bin
002b9e34d9ace419b9759a7ede631143c2aa9027f9ecd3f060ceed991ab53838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777D 15380 bytes
font_02_sfnt_off0000a6e7.bin
ed857b6729c6125f90afe624a6f5ea08e42783e13f7ccb1c6bb7a4c99f207fed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E7 16180 bytes

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